Plier joint construction



' F. H. suLLAnn.

l PL|ER 1p|NT CONSTRUCTION'. vAPPLICATION flLED 27. i921.

- 8 3 5 n Patentedspt. -5, 1922.

ATTORNEY.

Patented Sept. 5, r1922.,

,FREDERICK H. BULLARD, OF SPRINGFIELD,'.MASSACHUSETTS.`

' PLIER JOINT CONSTR-norman To all 'whom t may concern.'

Be it known that I, FREDERICK H. BUL- LARD, a citizen of the United States of America, residing at Springfield, in the county of Hampden and Commonwealth of Massachusetts, have invented certain new and useful mprovements in Plier Joint Constructions, of which the following is a specification.

This invention relates to improvements in tools, and more particularly to the joint construction of pliers and like implements.

of a broad hub or barrel portion that is formed as apart of one of the members of the implement, whereby there is little poss# bility of any undue wear taking place, and whereby the joint always held `firmly in place.

My invention further relates to the use of a rivet structure for retaining the parts in place and one that does not serveas a bearing about which the two members of the pliers turn.

Further objects and'nature of the invention will appear in the body of the specifican tion and will-be spec-iica'llypointed out in the claims.

Referring to the drawings: j Fig. l is a plan view of a pair offr pliers showing the usualhandle and jaw portions, and the connecting parts in full and dotted lines.

Fig. 2 is a detail sectional view of the joint taken in a plane on the linev2-2 of F ig. 1. Referring to 'the drawings in detail :wl

and 2 designate the handle portions and 3 and 4 the usual jaw portions of the pliers. 5 designates a rivet device having `an en-y larged disc-shaped end portion 6 which has a turning fit in an annular recessed part 7 of the handle portion 2. The shank portion passes through anepening 8 of the other handle member' l, which opening also passes through the hub part 9 of the member l.

The disc shaped end portion 6 is formed so as to have a good turning iit in the annular recessed part 7. The end 5 of the connecting rivet is set into or securedsto the member l by pressure or by hammer blows, so that the rivet turns with the handle member l. The hub portion `9 moves with the handle member l and turns in the opening l() of the. handle lmember 2, and has a bearingtherein. The end-ll of the hub `portion 9 rests firmly against the inner surfacer of the disc'shaped part 6. A slight lclearance ed end 5', as shown,` Broadly, my invention relates to the use Application filed April 27, 1921. `Serial Nm 464,825.

j space l2 is formed between the inner sur# faces of the members land 2 and at12y between the disc 6 and recess 7. j.

It will therefore be seen that there isno transverse bearing surface of either member l or 2 on the sha-'nk part of the rivet 5', but

only on the hub 9, opening 10, and at 7 when either one or both of the members 1 and 2 i are operatedz The rivet 5 turns with the member l, being securedthe Itis vobvious that no matter how firmly eto by the head-v ment, since the disc like.,v part rests` on kthe edge end l1 of the hub portion 9. The bearing surfaces are therefore alongthe edge of the-recessed faces 12.-

Whatlclaimisl. A joint for pliers, comprising an integral bearing part on one ofthe plier mem bers. the other member havingan opening therethrough of different diameters, a `rivet .device fixedly secured to the integral bearing part of one of the members and formed with an integral enlarged part which enters that portion of said opening which is of the larger diameter, and said integral bearing part of the plier member entering the remainingpart ofsaid opening, the opportion 7, opening 10,\and sur-v posite ends of the rivet device being Hush with the outer faces o f the kpliers and the end of the `integral bearing part engaging the inner surface ofthel enlarged part of the f rivet device, whereby the-bearing surfaces are confined to the different diameters in said opening. l

j 2. A joint for pliers and like imjjilements, comprising in combination with the two movable members, `of an integral hub part forming a part of one Aof the 1nembe1'.'s,ithe other member having an opening to movably receive the hub part and constituting av bearing for the hub part, the other movable member having an enlarged recessed partv adj aceiit the bearing for the'hubv part, a rivet device iixedly secured to and having a part passing through the hub part, and an integral discportion on the rivet device and located in the enlarged recessed part, said disc portion lhavinga turning Vfit inthe recessed part and the opposite'ends of the rivet de-.

vice beingfflush' with theopposite sides of lthe two movable members.

, FREDERICK H. BULLARD. 

